Window cleaning apparatus



1943- w. L. KRAEMER WINDOW CLEANING APPARATUS a Sh eets-Sheet 1 Filed May 17, 1941 ATTORNEY 7 k w 3 I i!l ,3 3 I 6 Q7 4. k

1943- w. L. KRAEMER 2,326,231

WINDOW CLEAN'ING APPARATUS Filed May 17, 1941 3 Sheets-Sheet 3 INVENTOR 14414004 KEAENER:

ATTORNEY of the Wiperarm; s

I ".inoperation- I h v Other and more limitedcbjectswill be -apparent J I from the iollowing specification and'the acom-E -panyingi drawing forminga part thereof l Patented Au 10, I 1943 I aszeas g I wmnow cL- ANINq PPARATUs ILWaldo LL Kraeni erQBrookl yn, YQ, assign ,Kearfott' Engineering 00., 111e,, a-corporationf w Atheni n may,

I e. I .r "feClaims This invention-'irelates generally" to apparatns Torremoling rain,*snow, sleet or anylother sight obstructing matter from;the windshields'ofau tomobiles or the lookout windowsjofships'street cars,'busse's and the-like? l wherein a windowwiperis resiliently pressed into engagement with 'a window Eand is moved back 7 and forth across] the window by: an a oscillating 'wipei arm which-,is operated by any suitable -rneans, preferably an electric motor, suitably con} nected tothe upperend-of the'wiper arrnr si The principal object oftheiinventionis to ip v'ide means, in combination with jappa'ratus of" this characten-Which is operativelyf'connected {to the-wiper and is soconstrncted and arrang edi asto'effect a cleaning offa greater-area byjthe ose; -.cillation of the wiper arm; than is possiblewith 1 such apparatnsfheretofore obtainable' *3 7 Still another object is Fwli ereinr 7 I -F'ig; lisia-diagrammatic frontfelevationofimyl I e on a small scale, showing ;the areacleaned 1 l by; my ir'nprovewdevice ;in 7 comparisonswith that I r I leleane'cl by othendevice s' of this general type} Y" P dot :Fig, :2 is a front elevation of my devicegwifll ,llthe: cover plate of the: housing removed drawn 1; nna somewhat larger scale than wthe scale of Y r Fig. '3 ea:semenW areas erliesoat s I line 33 of Fig. 2; Q

s Fig. 415 a central vertical sectionalview, taken I through the wiper arm in the plane indicated'by 1 the line. 4 4 of Fig. -3;andf'illustratingr .the'Jman ner inwhichthe mecha'nism operates'to main- I tain" the wiperplatelalwaysparallelto its initial gposition asit ismoved back and forth'by theoscil- :latio n ofthewiper arm; II Fig. 5 isadetail sectional ,line 5 5'of Fig. 2; and I iew take II I .1 Fig. 6 is a detail sectional; taken etiie I l c I 5 -whichis'resiliently'pressedintotenga'gementlwithj' 1 It is specifically directed to window cleansingv apparatus of V the oscillating I or pendulum type 'rnoved back'an dforthacrossth urface'fof -the" 15. wiper" blade at it'sgfreendinconta'ct 'Witha win I I 2o such a1-cleaning'l'apparatus"andmechanism for Another object'of *the-I inventionisthe provi-.. I 'sion'ofa'device ofthisf character 'whichis en- II I I I closed within and is foperated by the oscillation J ito be novel; The; particular construction of such I the provision of adevic'e", of this character'thatiis of simple construction so as to hie-easily andcheaplymanufactured"and.- I n I Referring to the dra ingsT-byVv-reference chara rnovablefcover 5 secured ;to theo'pen' side th ef 45'1the outer end of Ithepowef shaft/ 1a; windowfanjd ismoved backfand forthacross the .sfiflaciefitherdfibylithe farm; asit isxoscile late difan d mechanism, operativelyi connectcdto I t-heiwip'er blade andoperated h itheioscillation' -10 of the lwip er. armivwhich alwaysmaintainswthe Wiper: bladeparallek to its ,initia position2as itiis' I I 'mn ciovy' *-Windg w,=cleanersfccnipi ing a powerq: operate oscillatoryiiwiper farm which' carries'la dew;andImovesiitbacki andg forth acr'ossthe ,vfa'ce ofza window a'sit isFoScillatd} arejold andI Vj'well known in they-art; anclfas s ichiio'rm norpart I of this inventionil Howeiier the combination of j;

-mainta ining; the wiperlblacleA-parallelto its'initial i; position-as itiismovedibackrand' forth; is believed fo'r resilient engagement with a" 'ndow, are als abelieved to be novel.-

turn is"fmountediin an opening 1 in the'twall aships pilot I-jhwse; 214A *housing: 4 having} I by screws fi, is ,fastene'cL-tofthe ionizer surface f 4 r'the wall 3 above the frame zby bracke s =1;;wh1cn V I I are attached. atone-englto 'the=IwalL:3"byibolts$8 I a gang attheirr'other ends totoutwardl lugs s -"on thefhousing dloyrboltsilfl.

I motor l il, fl havin'g areduction gearingfoperati y'co n'nected' 4 to the armature 'xshait ith'lidff is fastenedb Lscre'wsl 3 within t hIe hou's'ingll; Theireductio gearing is: enclosed within? a casing "-l 4. "which I --formedinteg"ral with and projects outwardly-"fronts the motor casin" i Acrankiiiiscil5*is keyedi'on I 6 :o'mhe reduc I :-tiorfgearingc asfindicated;at fl 1; r 7 'iThe 'crank"disczlirhasza plurality I h 'e h h arranged s ir l men t e c s ter of the disc;- which:are;:adapted .to "receive the we stud- 20 constitute a. c ank,,the thrwqfw 55 has ne n thereof-rota;

1 connected to the free endspi- SQidzCIfdhk-Eififl f- 7 bination of a'hollow' iock-sl iafl;garictlneansioi' latoryarin; a window engaging wipergopratively to-a fixed memberand' hajing its; theijend-piv of said oscillatory" arm ,;:said last mentioned i iationof awiper blade;'ndea'ns in'ciudirigfa hollow means comprising a fixedjarm withinsaidhollow 15 oscillating" arm forming; a closed housiriglffo'f tionary rod, acrank-jarm 'withirisaid hollow 0 s-. W d j. d. Q T- v i S'Q DI Q n and a'linkjwithir saidoscillatory arm} said link maintaining said"wiper -iblade pafallelitoits, in: having one end pivqtally conneoted to the free g -hitialflpo'sitionwhile it isqoeingl-moved back and" connected-tome free 'endpfsaidfrank -a'1fm. enclosed withinsaid hollow oscillating arn an d"" nation o'fa hollow oscillatory wiper aim forming 1 ported infth e-i-f re'e end: =1of s'jaidloscillating arn t T a closed housingpoweif operated-means com. SfaeranK'a m rig'idlyseoilred; o" nected to one end'oft saidwiper afmforfloscillat-V j holder, and a link'having'onef U ing'said arm, awiper hlade'holder;i otatably-sup- 1 Lnected to a fixediimembe am1;'l iavingi,it'si'other' P t y-said arm'at thefreeje ndthereof, a end-:pivotally'con' "Wiperblade adaptedto'fengage a windowlandlbe v cfank a11m.1-- moved b ck a 'id forth across thqsurfaoefthere- 6;, v ---of by the osgi llation of said aim secured"to said-" --J ipr blade" homer; anfd' in'eai1's myma'mtaigmg f V sagid-wipezgblad parallel: to its initial positi 2. In a window cleaningapparatus; the com a while it istfbei g moyeqbackj and.Iorth j said j'mean'slbeing entirely en lo sed withinsaid rocking said shaft, a stationaryf'rod extending '56.wiper arm and coifipfising a oifanklaini r g *through the bore in said hollow :rock-shaftga corineoted to saidwiper bladeliolder-and exte hollow oscillatory arm rigidlyjconnected' at one) q ngoutwa rdly thelfefrom' in a plane-perpend end to the outer end of said rock-shaft, a sleeve 'llantdfthe axis oftsaidfwiper;blade holdefland rotatably'sl portedin the free rend o f s'a'id oscil r aflihk having oneen'd:thereoi pivotaliyconnebted' cbnnectedjto said sleeve, and means fo tflmainf v tainingsaiq. wiper parallel to its initial position; Janna] H I 3 as it is' moved backand forth byithe oscillationi'i f1 ;"In'a.winyiowmeanin ap ara ;th m

otally Connected; "the gfi'ee end aid crank oscillatory arm gigidly{conneotedxto saidistagfgholding said wipeit blad in engagementwith; a

cillatory arm rigidly {connected tosai dj.s1eeve, forth across the'surfacethereof; and means for end of said fixed-arm and'thepfljer endpivotally forth;-isaid last mentioned-means beingentiifly "SL In awindow'gleaning"apparatusgthepoxnbt' ".t-cmprismga wiper'fbla t t bly supi iw e lad dgpivotallyconneotd n the freee f said A B KR 

